J. Biochem, 2004, Vol. 136, No. 4 533-539
© 2004 The Japanese Biochemical Society
BIOCHEMISTRY |
Structural and Functional Relationship among Diamines in Terms of Inhibition of Cell Growth
1 Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675; 2 Department of Biochemistry II, The Jikei University School of Medicine, Minato-ku, Tokyo 105-8461; and 3 Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0248
Following the report that agmatine has an anti-proliferative effect on cell growth through induction of antizyme [Satriano et al. (1998) J. Biol. Chem. 273, 15313–15316], we examined the effects of 16 different diamines on cell growth. Many diamines had little or no effect on cell growth, but agmatine and 1,6-hexanediamine had anti-proliferative effects, with agmatine having the strongest effect. Inhibition of cell growth occurred after 2 days, and inhibitory effects paralleled the degree of antizyme induction. Decreased spermine levels indicated that induction of spermidine/spermine N1-acetyltransferase was also involved in the inhibition of cell growth by agmatine and 1,6-hexanediamine. The frameshift efficiency (ratio of antizyme synthesis with or without frameshift) measured in a rabbit reticulocyte cell-free system was also increased by 1,3-propanediamine and cis-1,4-cyclohexanediamine in addition to agmatine and 1,6-hexanediamine. However, the intracellular levels of 1,3-propanediamine and cis-1,4-cyclohexanediamine were low when these compounds were added to the cell-culture medium. Other diamines had no effect on cell growth or frameshift efficiency. The results suggest that the presence of two amino-groups separated by an appropriate distance is important for the enhancement of frameshifting by diamines.
* These authors contributed equally to this work.
To whom correspondence should be addressed. Tel: +81-43-226-2871, Fax: +81-43-226-2873, E-mail: iga16077{at}p.chiba-u.ac.jp
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